#and
# age = 18
# if 0 < age < 100:
#     print("输入正确")
# else:
#     print("输入错误")

# or
# 定义变量
# python_score = 80
# c_score = 30
# if python_score >= 60 or c_score >= 60:
#     print("成绩合格")

# not
# age = 17
# if not (age < 18):
#     print("已成年")
# else:
#     print("未成年")

# not构成条件
# 定义变量（True表示本公司员工）
# 定义变量
employer = False
# if not employer:
if not (employer is False):
    print("本公司员工")
else:
    print("非本公司员工")